{
  "site": "https://pwn.watch",
  "generatedAt": "2026-10-22T20:45:43.249Z",
  "tag": {
    "id": "outage",
    "label": "Outage",
    "isStack": false,
    "url": "https://pwn.watch/t/outage",
    "feed": "https://pwn.watch/t/outage/feed.xml"
  },
  "counts": {
    "incidents": 1,
    "live": 0,
    "notFullyPatched": 0,
    "patched": 1
  },
  "incidents": [
    {
      "slug": "crowdstrike-falcon-channel-file-291-outage",
      "title": "CrowdStrike Falcon update crashes 8.5 million Windows machines",
      "url": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage",
      "json": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage.json",
      "status": "closed",
      "severity": "critical",
      "patchStatus": "patched",
      "product": "CrowdStrike Falcon sensor for Windows",
      "tags": [
        "crowdstrike",
        "windows",
        "outage",
        "edr",
        "microsoft"
      ],
      "cveIds": [],
      "affectedVersions": [
        "Falcon sensor for Windows 7.11 and above, online 04:09-05:27 UTC on 2024-07-19 (CrowdStrike)"
      ],
      "fixedVersions": [
        "Channel File 291 content reverted at 05:27 UTC; affected hosts needed manual remediation (CrowdStrike)"
      ],
      "startedAt": "2024-07-19",
      "closedAt": "2024-08-06",
      "updatedAt": "2024-08-06",
      "summary": "A faulty CrowdStrike Falcon sensor configuration update (Channel File 291) caused a logic error that blue-screened Windows hosts running sensor 7.11 and later that were online between 04:09 and 05:27 UTC on 2024-07-19. Microsoft estimated 8.5 million Windows devices were affected CrowdStrike stressed it was not a cyberattack; it is tracked here because a security agent with kernel-level access took down machines worldwide.",
      "xPost": null
    }
  ],
  "posts": [],
  "changes": [
    {
      "incident": "crowdstrike-falcon-channel-file-291-outage",
      "incidentTitle": "CrowdStrike Falcon update crashes 8.5 million Windows machines",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2024-08-06",
      "title": "CrowdStrike publishes the Channel File 291 root cause analysis",
      "body": null,
      "sourceUrl": "https://www.crowdstrike.com/wp-content/uploads/2024/08/Channel-File-291-Incident-Root-Cause-Analysis-08.06.2024.pdf",
      "url": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage"
    },
    {
      "incident": "crowdstrike-falcon-channel-file-291-outage",
      "incidentTitle": "CrowdStrike Falcon update crashes 8.5 million Windows machines",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2024-07-20",
      "title": "CrowdStrike publishes technical details; Microsoft estimates 8.5 million Windows devices affected",
      "body": null,
      "sourceUrl": "https://blogs.microsoft.com/blog/2024/07/20/helping-our-customers-through-the-crowdstrike-outage/",
      "url": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage"
    },
    {
      "incident": "crowdstrike-falcon-channel-file-291-outage",
      "incidentTitle": "CrowdStrike Falcon update crashes 8.5 million Windows machines",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2024-07-19",
      "title": "04:09 UTC: CrowdStrike pushes the Channel File 291 update; Windows hosts crash",
      "body": null,
      "sourceUrl": "https://www.crowdstrike.com/blog/falcon-update-for-windows-hosts-technical-details/",
      "url": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage"
    },
    {
      "incident": "crowdstrike-falcon-channel-file-291-outage",
      "incidentTitle": "CrowdStrike Falcon update crashes 8.5 million Windows machines",
      "severity": "critical",
      "status": "closed",
      "patchStatus": "patched",
      "date": "2024-07-19",
      "title": "05:27 UTC: the faulty update is remediated",
      "body": null,
      "sourceUrl": "https://www.crowdstrike.com/blog/falcon-update-for-windows-hosts-technical-details/",
      "url": "https://pwn.watch/i/crowdstrike-falcon-channel-file-291-outage"
    }
  ]
}